Ensures that WebRTC works for device selection using a different sample rate than default

content/public/common/media_stream_request.cc

Index: content/public/common/media_stream_request.cc
diff --git a/content/public/common/media_stream_request.cc b/content/public/common/media_stream_request.cc
index 8d2f66731cbec9b3c29f98ce66e93ed10018164e..8dced44362ced2b665468439c66150e42116cb88 100644
--- a/content/public/common/media_stream_request.cc
+++ b/content/public/common/media_stream_request.cc
@@ -26,7 +26,22 @@ MediaStreamDevice::MediaStreamDevice(
     const std::string& name)
     : type(type),
       id(id),
-      name(name) {
+      name(name),
+      sample_rate(0),
+      channel_layout(0) {
+}
+
+MediaStreamDevice::MediaStreamDevice(
+    MediaStreamType type,
+    const std::string& id,
+    const std::string& name,
+    int sample_rate,
+    int channel_layout)
+    : type(type),
+      id(id),
+      name(name),
+      sample_rate(sample_rate),
+      channel_layout(channel_layout) {
 }
 
 MediaStreamDevice::~MediaStreamDevice() {}